Burgers
There are people who, not unreasonably, would take a juicy burger over the finest steak any day, but back in the Upton Sinclair days, ground beef was seen as unclean at best and possibly containing dude at worst. That’s actually why the restaurant that invented fast food burgers, White Castle, is called White Castle — it evokes a sense of cleanliness and purity, enhanced by the restaurant’s spotless stainless steel interior. They even ground their beef in plain view of customers to assure them that no one had fallen into it. Yes, there was a time when America had to be convinced to eat a fast food burger.
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